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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
3VT4200-0BP00
3VT4200-0BP00
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Siemens
-
-
5SG7-161
5SG7-161
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From
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Siemens
-
-
5SG7713
5SG7713
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Siemens
-
-
5SL6210-6
5SL6210-6
Limited Stock
From
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Siemens
10
400
5SL6504-7
5SL6504-7
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Siemens
4
400
5SN1-350
5SN1-350
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Siemens
50
380
5SN1-TP-306
5SN1-TP-306
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Siemens
8
415
5SN1301
5SN1301
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Siemens
1
-
5SN1340
5SN1340
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Siemens
40
380
5SN1340-8F
5SN1340-8F
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Siemens
40
380
5SN2332
5SN2332
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Siemens
32
415
5SN2NG6A
5SN2NG6A
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Siemens
6
415
5SN7116-0KB30
5SN7116-0KB30
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Siemens
16
415
5SN7210-0KB30
5SN7210-0KB30
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Siemens
10
380
5SN7232-0KB30
5SN7232-0KB30
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Siemens
32
380
5SN8101-0KB00
5SN8101-0KB00
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From
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Siemens
1
220
5SN8102-0KB00
5SN8102-0KB00
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Siemens
2
220
5SN8104-0KB00
5SN8104-0KB00
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Siemens
4
220
5SN8210-0KB00
5SN8210-0KB00
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Siemens
10
220
5SN9-G32A
5SN9-G32A
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Siemens
32
415
7186
7186
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Sperry Instruments
-
-
BA2030
BA2030
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Westinghouse
-
240
BB-UL-TE/50
BB-UL-TE/50
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From
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Eaton
-
480
BD-100E-P
BD-100E-P
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Watts
-
300
Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.


Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.